6th grade semester 1 final review

Why is the Earth separated into different layers?

• The different masses of each layer cause them to separate and layer.

• The different densities of each layer cause them to separate and layer.

• The different composition of each layer causes them to separate and layer.

• The different volumes of each layer cause them to separate and layer.

Which of the following are characteristics of oceanic crust?

• Oceanic crust is mostly watery granite.

• Oceanic crust is what makes up the silicon beaches.

• Oceanic crust is mostly basalt and comprises the ocean floor.

• Oceanic crust is the oldest crust.

Which of the following are characteristics of continental crust?

• Continental crust is mostly granite and makes up the land we live on.

• Continental crust is what makes up the ocean floor.

• Continental crust is mostly basalt.

• Continental crust has the greatest density of all types of crust.

What characteristics describe the mantle?

• The layer that makes up the entirety of the tectonic plates.

• Consists of the asthenosphere, a layer of molten rock called magma that moves the tectonic plates.

• The liquid layer responsible for Earth's magnetic field.

• The hottest layer made of solid iron.

Earth has a magnetic field that protects us from ultraviolet rays and space debris. This is possible due to which of the following statements?

• The swirling of the liquid metal in the inner core inside of the solid outer core.

• The convection currents in the magma of the mantle.

• The extreme heat in the inner core.

• The swirling of liquid metal in the outer core that surrounds the solid inner core.

Which of the following is the correct order of the temperature of Earth's layers from coolest to hottest?

• Crust, mantle, outer core, inner core

• Outer core, inner core, crust, mantle

• Inner core, mantle, outer core, crust

• Inner core, outer core, mantle, crust

What happens to the temperature within Earth as the pressure increases?

• The temperature remains the same.

• The temperature decreases and then increases.

• The temperature increases.

• The temperature decreases.

Tags

NGSS.HS-ESS2-3

What evidence is there for plate tectonics?

• Topographic maps that show elevation.

• Evidence from drilling into the Earth.

• Satellite images that show the outlines of the plates.

• The geologic events that occur at plate boundaries such as earthquakes and volcanic eruptions.

Tags

NGSS.MS-ESS2-3

What happens in a subduction zone?

• Two plates slide past each other and cause earthquakes.

• Two plates come together of different densities and one sinks under the other and melts.

• Two oceanic plates diverge and create a ridge.

• Two continental plates collide and form mountains.

Tags

NGSS.MS-ESS2-3

NGSS.MS-ESS2-2

What is the creation of new crust at divergent oceanic boundaries called?

• Seafloor spreading

• Subduction zones

• Volcanic island arcs

• Faulting